How can tartar and plaque be removed from teeth without grinding? is there any paste, etc. for it?
The girders of a suspension bridge form an arc. The definition of an arc is a curve or bowed shape, like a part of a circle. An example of an arc is a rainbow. To arc is defined as to make a curved shape or move in a curved path.
In summary, an arc is a part of a circle's edge, or circumference. When two points are identified on a circle, the shorter arc is the minor arc and the larger one is the major arc. The measure of an arc is the degree of the angle that intercepts the arc. Remember that the measure of an arc is a degree, not a distance.